henry first built an 80-foot mockup in texas earlier this year. rafts launching into orbit again and again. but there are human crash test dummies. and henry is their chief. as challenging as the the ride is so was construction. like a lego set with pieces that had to fit with laser-like perfection. it didn't always happen. how much over budget and how late? >> we are way over budget. >> reporter: there is one more person about to get his waltter slide face on yet again. whoo. >> better him than me. thank you for watching abc news. "world news now" with overnight breaking new. tune in to [dramatic music] ♪ >> yeah! all right, there we go. what's up, baby? hey, hey, hey, hey, hey, baby. what's up? [cheers and applause] hello, and welcome to millionaire. all week long, we're giving contestants the chance to win more than just money. they can also win a dream vacation. it's millionaire's cruise in and win week, yo! [cheers and applause] now, contestants aren't the only ones getting in on the action. you at home could have a chance to score a cruise